Given f(x) = 5x-1what is f(-2) ?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Which of the following are accepted without proof in a logical system? check all that apply.